How does my ads get rotated in Google Adwords?

Solution

How often your ads get placed into rotation is influenced by two things:

#1 is how many clicks you can afford per day based on your daily spending limit.

#2 is your click through rate.

Your click through rate indicates to the search engine how many people are actually clicking on your ad which shows them how successful your ad is for them. If people are clicking your ads, Google makes money. If Google is making money by displaying your ads they are going to want to show them often enough for you to get maximum exposure.